Genome-Wide Identification and Characterization of the Biosynthesis of the Polyamine Gene Family in Citrus unshiu

Polyamines (PAs) contribute to diverse plant processes, environmental interaction, and stress responses. In citrus, the mechanism underlying biosynthesis of polyamines is poorly understood. The present study aims identify PA gene family members in satsuma mandarin (Citrus unshiu) investigate their response against various stresses. identified genes C. unshiu showed clustering six groups, i.e., SPMS, SPDS, ACL5, ADC, ODC, SAMDC. Syntenic analysis revealed that segmental duplication was prevalent among compared tandem duplication. Thus, it might be main reason for diversity unshiu. Almost all syntenic blocks genome Arabidopsis, Citrus sinensis, Poncirus trifoliata, reticulata. Analysis Cis-regulatory elements (CREs) indicated occurrence hormones, light, defense, responses as well development other mechanisms-related upstream sequence genes. Expression profiling expression modulates different organs during developmental stages This information will provide a deep understanding genomic its multiple tissues better understand potential application functional genomics.